Aaron Klein writes: "The Obama Justice Department instructed San Francisco police officials not to comment after top law enforcement officers there signed a letter accusing Weathermen radical Bill Ayers and his wife, Bernardine Dohrn, of being directly behind the 1970 bombing of San Francisco's police station that killed one sergeant and wounded nine others. 'There are irrefutable and compelling reasons to believe that Bill Ayers and his wife Bernardine Dohr are largely responsible for the bombing of Park Police Station,' the officers stated in a [letter released last week]' The letter called for the U.S. to bring 'those responsible for the murder of Sgt. Brian McDonnell and the injuries to other officers to the justice they have so long eluded.' Now the San Francisco Chronicle is reporting the police group members who signed the letter received calls from the Justice Department and a local police chief telling them to remain silent. " Obama fires up mob anger to cause death threats to private citizens, calls his buds at ACORN (now rich from the stimulus cash) to get a bus of thugs up to Connecticut to harass those private citizens, and now he has buddy Eric Holder's minions at Justice harass and attempt to silence local police officers who want a real investigation into the murders of their fellows -- allegedly murdered by Ayers and Dohrn -- Obama's mentors when they were in the terrorist group the Weathermen. Why are SF Police Officers being silenced by the Justice Department about Obama's murdering mentor, Ayers? http://www.worldnetdaily.com/?pageId=92722